VulnerabilityPublished 28 Jun 2026

CVE-2026-13514: Chess Play and Learn App · Exposure of Backup File to an Unauthorized Control Sphere

Affects Chess Play and Learn AppSource CVE Database V5

Compare

Public exploit available · CVSS 2.4 Low.

Data as of 11 Nov 2026, 23:24 UTC

CVSS 4.0 base score

2.4Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Physical
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: None
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Physical: The attack requires the attacker to physically touch or manipulate the vulnerable system. Physical interaction may be brief (e.g., evil maid attack) or persistent.
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 28 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
ChessPlay and Learn App	Affected 4.9.0 – 4.9.42 43 affected builds	Fixed in–

CPE configurations (1)

cpe:2.3:a:chess:play_and_learn_app:*:*:*:*:*:*:*:*

AI-suggested

The vendor has confirmed the issue and plans to address it in future updates. Until a fix is released, users should be aware that physical access to the device could expose backup files. The vendor's bug bounty excludes physical-access attacks, but they acknowledge the report and may provide goodwill compensation. Users should monitor vendor advisories for updates and upgrade once a patch becomes available.

Description

A weakness has been identified in Chess Play and Learn App up to 4.9.42 on Android. This issue affects some unknown processing of the file AndroidManifest.xml of the component com.chess. This manipulation causes exposure of backup file to an unauthorized control sphere. It is feasible to perform the attack on the physical device. The exploit has been made available to the public and could be used for attacks. Upgrading the affected component is advised. The vendor was informed early about this issue. They confirmed the existence and that they will address it. Furthermore, they explain that their bug bounty "explicitly excludes physical-access attacks". However, they appreciate the quality of the report and aim at making a goodwill payment to the researcher.

Impact

The impact is limited to unauthorized exposure of a backup file on a physical device, which could potentially lead to information disclosure. The CVSS 4.0 base score is 2.4, indicating low severity. There is no indication of remote exploitation or privilege escalation. The vulnerability does not affect cloud services and requires physical access to exploit.

Summary

This vulnerability affects the Chess Play and Learn App on Android versions 4.9.0 through 4.9.42. It arises from improper handling of the AndroidManifest.xml file component, leading to exposure of a backup file to unauthorized control spheres. Exploitation requires physical access to the device. The vulnerability has been publicly disclosed, and the vendor has confirmed its existence and intends to fix it.

References

Community reviews

Loading reviews…